CN114084588A - Rectangular chain link and chain for underground conveying equipment - Google Patents
Rectangular chain link and chain for underground conveying equipment Download PDFInfo
- Publication number
- CN114084588A CN114084588A CN202111297038.6A CN202111297038A CN114084588A CN 114084588 A CN114084588 A CN 114084588A CN 202111297038 A CN202111297038 A CN 202111297038A CN 114084588 A CN114084588 A CN 114084588A
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- CN
- China
- Prior art keywords
- chain
- rectangular
- link
- section
- radius
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/02—Belt- or chain-engaging elements
- B65G23/04—Drums, rollers, or wheels
- B65G23/06—Drums, rollers, or wheels with projections engaging abutments on belts or chains, e.g. sprocket wheels
Abstract
The invention relates to a rectangular chain link and a chain for a downhole conveying device, wherein at least a second chain link is designed into a rectangular chain link, the rectangular chain link is used for horizontal directional arrangement and is provided with two long straight arms and two short side arms, the inner sides of the long straight arms and the short straight arms are connected in a rounding mode, a thickened part is arranged in the middle of the short straight arms, the enveloping circle radius of the inner sides of the thickened part is larger than that of the inner arcs of the long straight arms, so that the thickened parts are formed on the upper side and the lower side of the middle part of the short straight arms, and the height of the thickened parts is larger than that of the long straight arms. The radius of the enveloping circle inside the thickened part is equal to the radius of the rounded section of the vertically arranged chain link. According to the invention, the chain links are designed into the rectangular chain links, so that the contact area between the chain links and the chain wheel is increased, and the contact area between the two chain links is increased; thereby effectively prolonging the service life of the chain and the chain wheel.
Description
Technical Field
The invention relates to the technical field of conveying equipment, in particular to a rectangular chain link and a chain for underground conveying equipment.
Background
Chains are used in the underground coal mining industry as transmission chains for driving scraper conveyors. The torque output by the motor is transmitted to a chain wheel of the scraper conveyor after passing through a series of transmission systems, the chain wheel drives a chain to run by meshing a chain socket on the tooth shape with a chain flat ring, and the chain drags a scraper fixed on a horizontal chain link to push coal to be transported.
The horizontally arranged chain link meshed with the chain wheel of the traditional chain and the conveyor is a welded round steel chain link, and is characterized in that the section of each part is basically the same as that of a bar stock for producing the chain link, the chain link is in line contact with a support plane of a chain nest of the chain wheel, and the chain nest is in contact with a semi-arc below the arc end of the chain in a two-point mode at the initial stage when the chain link is in arc contact with the chain nest of the chain wheel after being worn for a period of time. The horizontally arranged chain links can be bent and deformed due to the abrasion of the chain wheels and the like in the process of meshing with the chain wheels, but the flat ring is easy to break due to the characteristic of poor bending fatigue resistance of a welding structure in the manufacturing process, and hidden dangers are generated for production safety. Meanwhile, the horizontally arranged chain links can also reduce the service life of the chain and the chain wheel due to the small contact area of the chain links and the chain wheel.
Disclosure of Invention
In order to solve the technical problem, the invention provides a rectangular chain link and a chain for underground conveying equipment, wherein the chain link is designed into a rectangular chain link, so that the contact area of the chain link and a chain wheel is increased, and the contact area of the two chain links is increased; thereby make the life of chain and sprocket all obtain effectual improvement, and intensity also can satisfy the user demand.
A rectangular chain link for a downhole conveying device, which has two long straight arms 2 and two short straight arms 3, the long straight arms 2 and the short straight arms 3 are connected on the inner side by a rounding section 4; the circle center of the arc of the inverted circular section 4 is positioned on the symmetrical center of the two long straight arms 2, and the radius R of the inverted circular section is larger than or equal to the radius Rp of the arc of the section of the vertically-arranged chain link inverted circular section connected with the inverted circular section; the radius R of the rounding section can be infinitely increased, namely the rounding section becomes a straight line, the inner side and the outer side of the special long straight arm 2 ' and the special short straight arm 3 ' are connected through a small rounding, and at the moment, a special rectangular chain link 1 ' is formed.
A rectangular chain link for a downhole conveying apparatus, wherein a thickened portion 5 is provided at a central position of a rounded portion 4, an envelope radius Ra inside the thickened portion is larger than an envelope radius Rb of an inner arc of a long straight arm, so that the thickened portion 5 is formed above and below the central position of the rounded portion 4, and a height Ha of the thickened portion is larger than a height Hi of the long straight arm.
A rectangular chain link for underground conveying equipment, the middle position of the special short straight arm 3 ' of the special rectangular chain link 1 ' is provided with a special thickening part 5 ', the enveloping radius Ra of the inner side of the thickening part in the cross section is larger than the enveloping radius Rb of the inner arc of the long straight arm, thereby forming the special thickening part 5 ' at the upper and lower surfaces of the middle position of the special short straight arm 3 ', and the height Ha of the thickening part is larger than the height Hi of the long straight arm.
A rectangular link for a downhole conveyance apparatus has an envelope radius Ra inside a thickened portion equal to a vertically arranged link radius R1, and a thickened portion width b1 equal to or less than a thickness H of the vertically arranged link.
A rectangular chain link for a downhole conveying device, wherein the cross section of the rectangular chain link at any position (except a thickened part) vertical to the periphery of the rectangular chain link is oblong or approximately oblong; the long straight arm section may be elliptical.
The chain 10 having rectangular links is formed by alternately connecting the above-described horizontal rectangular links and vertically arranged links; the vertically arranged chain links 9 may be round steel chains with round sections, flat chain links with circular arc sections and straight arm sections with different sections, or wide belt chains with the same width and the same or similar section shapes of the sections in the horizontal direction. The vertically arranged chain links 9 may have one or more inward thickenings in the straight arm sections.
Compared with the traditional long round steel chain, the contact surface of the rectangular chain link and the chain wheel on the horizontal plane is greatly increased, the pressure intensity in the unit area of the plane of the chain nest of the chain wheel is greatly reduced on the premise that the total power of the conveyor is not changed, and the radial abrasion rate of the chain nest of the chain wheel is reduced; meanwhile, the meshing surface of the rectangular chain link and the chain wheel is changed from a traditional two-point or semi-circular arc surface into a long straight arc surface taking the short straight edge of the rectangular chain link as the length, the effective area of the meshing surface is increased, the meshing stability is improved, the normal abrasion life of the chain nest of the chain wheel is prolonged, and the problem of chain jumping caused by improper processing of the chain nest can be effectively reduced. A thickened part is arranged in the middle of a short straight arm of the rectangular chain link, the radius Ra of an envelope circle on the inner side of the thickened part is equal to the radius R1 of an inverted circle section of the vertically arranged chain link, the contact area between the horizontally arranged chain link and the vertically arranged chain link is increased to the greatest extent, the problem that the pitch of the chain is enlarged due to relative sliding and extrusion between the horizontal chain link and the vertical chain link is solved, and the service life of the chain is prolonged.
Drawings
FIG. 1 rectangular Link plan view
FIG. 2 is a cross-sectional view of a rectangular link taken along section X-X
FIG. 3 is a cross-sectional view of a rectangular link taken in cross section Y-Y
FIG. 4 is a cross-sectional view of a rectangular link at section G
FIG. 5 chain with rectangular links
Figure 6 special rectangular chain link
FIG. 7 is a perspective view of a rectangular link
Wherein 1 is a rectangular chain link; 2, a long straight arm; 3 short straight arm; 4, a rounding section; 5, thickening part; 9 vertically arranging chain links; 10 a chain comprising rectangular links; 1' special rectangular chain link; 2' special long straight arm; 3' special short straight arm; 4' transition fillets; 5' special thickening part; b, the outer width of the rectangular chain link is wide; b1 vertically arranging the outer width of the chain link; bx standard round steel chain vertical ring width; b, the inner width of the rectangular chain link is wide; b1 thickened portion width; r radius section radius; r1 vertically arranged link radius segment radius; the radius of the enveloping circle inside the Ra thickening; the radius of an enveloping circle of an inner arc of the Rb long straight arm, the Ri rated radius, the radius of a section arc of an inverted section of the Rp vertically arranged chain link, the thickness of the H vertically arranged chain link, the height of the Ha thickened part, the height of the Hi long straight arm, the T pitch and the length of the L section.
The specific implementation mode is as follows:
as shown in fig. 1-6, a rectangular chain link and a chain for a downhole conveying device, the rectangular chain link has two long straight arms 2 and two short straight arms 3, the long straight arms 2 and the short straight arms 3 are connected by a rounding section 4 at the inner side; the circle center of the arc of the inverted circular section 4 is positioned on the symmetrical center of the two long straight arms 2, and the radius R of the inverted circular section is larger than or equal to the radius Rp of the arc of the section of the vertically-arranged chain link inverted circular section connected with the inverted circular section; the radius R of the rounding section can be infinitely increased, namely the rounding section becomes a straight line, the inner side and the outer side of the special long straight arm 2 ' and the special short straight arm 3 ' are connected through a small rounding, and at the moment, a special rectangular chain link 1 ' is formed.
As shown in figures 1 and 2, the rectangular chain link and chain for the underground conveying equipment is provided with a thickened part 5 at the middle position of a rounding section 4, the envelope radius Ra of the inner side of the thickened part is larger than the envelope radius Rb of the inner arc of a long straight arm, so that the thickened part 5 is formed at the upper and lower parts of the middle position of the rounding section 4, and the height Ha of the thickened part is larger than the height Hi of the long straight arm.
As shown in fig. 2 and 6, a rectangular chain link and a chain for a downhole conveying device, wherein a special thickened part 5 ' is arranged at the middle position of a special short straight arm 3 ' of a special rectangular chain link 1 ', the enveloping radius Ra of the inner side of the thickened part in the cross section is larger than the enveloping radius Rb of the inner arc of the long straight arm, so that the special thickened part 5 ' is formed at the upper and lower parts of the middle position of the special short straight arm 3 ', and the height Ha of the thickened part is larger than the height Hi of the long straight arm.
As shown in figures 2, 3 and 5, the rectangular chain link and the chain for the underground conveying equipment have the envelope radius Ra of the inner side of the thickened part which is equal to the radius R1 of the rounded section of the vertically arranged chain link, and the width b1 of the thickened part which is less than or equal to the thickness H of the vertically arranged chain link.
A rectangular chain link and a chain for a downhole conveying device are provided, wherein the cross section of the rectangular chain link at any position (except for thickened parts) vertical to the periphery of the rectangular chain link is oblong or approximately oblong; the long straight arm section may be elliptical.
As shown in fig. 5, the chain 10 having rectangular links is formed by alternately connecting the above-described horizontal rectangular links and vertically arranged links to each other; the vertically arranged chain links 9 may be round steel chains with round sections, flat chain links with circular arc sections and straight arm sections with different sections, or wide belt chains with the same width, the same or similar section shapes of the sections in the horizontal direction. The vertically arranged chain links 9 may have one or more inward thickenings in the straight arm sections.
The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention in any manner. It should be noted that, for those skilled in the relevant art, various modifications and improvements can be made without departing from the main structure of the present invention, and such changes should be considered as the protection scope of the present invention.
Claims (8)
1. A rectangular chain link for a downhole conveying device, characterized in that the rectangular chain link has two long straight arms (2) and two short straight arms (3), the long straight arms (2) and the short straight arms (3) being connected on the inside by a rounding segment (4); the circle center of the arc of the rounding section (4) is positioned on the symmetrical center of the two long straight arms (2), and the radius (R) of the rounding section is larger than or equal to the radius (Rp) of the arc of the section of the vertically-arranged chain link rounding section connected with the rounding section; the radius (R) of the rounding section can be infinitely increased, namely the rounding section becomes a straight line, the inner side and the outer side of the special long straight arm (2 ') and the special short straight arm (3 ') are connected through small rounding, and then a special rectangular chain link (1 ') is formed.
2. A rectangular link for a downhole transportation device according to claim 1, characterized in that the rounded section (4) is provided with a thickening (5) at a central position, the radius of the envelope circle (Ra) inside the thickening being larger than the radius of the envelope circle (Rb) of the inner arc of the long straight arm, whereby the thickening (5) is formed above and below the central position of the rounded section (4), and the height of the thickening (Ha) is larger than the height of the long straight arm (Hi).
3. A rectangular link for a downhole transportation device according to claim 1, c h a r a c t e r i z e d in that the special rectangular link (1 ') is provided with a special thickening (5 ') in the middle of the special short straight limb (3 ') and in that the radius of the envelope circle (Ra) inside the thickening is larger than the radius of the envelope circle (Rb) of the inner arc of the long straight limb in the cross-section, whereby the special thickening (5 ') is formed above and below the middle of the special short straight limb (3 ') and that the height of the thickening (Ha) is larger than the height of the long straight limb (Hi).
4. A rectangular link for a downhole conveying apparatus according to claim 2 or 3, characterized in that the enveloping circle radius (Ra) inside the thickening is equal to the vertically arranged link rounded section radius (R1); the thickened portion width (b 1) is equal to or less than the thickness (H) of the vertically arranged link.
5. A rectangular link and chain for a downhole conveying apparatus according to any of claims 1-4, wherein the cross-sectional shape at any position (except for the thickened portion) perpendicular to the periphery thereof is oblong or approximately oblong; the long straight arm section may be elliptical.
6. A rectangular chain link and a chain for a downhole conveying apparatus, characterized in that the chain (10) comprising rectangular chain links is formed by connecting horizontal rectangular chain links and vertically arranged chain links according to any one of claims 1 to 5 alternately with each other.
7. A rectangular chain link and chain for a downhole conveying equipment according to claim 6, characterized in that the vertically arranged chain links (9) of the chain (10) comprising rectangular chain links may be round steel chains all having circular section, flat chain links having circular arc sections and straight arm sections with different sections, or wide belt chains each having the same width, the same or similar cross-sectional shape in the horizontal direction.
8. A rectangular link and chain for a downhole conveying apparatus according to claims 6-7, characterised in that the vertically arranged link (9) has one or more inwardly directed thickenings in the straight arm section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297038.6A CN114084588A (en) | 2021-11-04 | 2021-11-04 | Rectangular chain link and chain for underground conveying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297038.6A CN114084588A (en) | 2021-11-04 | 2021-11-04 | Rectangular chain link and chain for underground conveying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114084588A true CN114084588A (en) | 2022-02-25 |
Family
ID=80298856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111297038.6A Pending CN114084588A (en) | 2021-11-04 | 2021-11-04 | Rectangular chain link and chain for underground conveying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114084588A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231200A (en) * | 2022-07-19 | 2022-10-25 | 中煤张家口煤矿机械有限责任公司 | High-strength forged flat ring compact chain for conveying equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19701579A1 (en) * | 1996-12-13 | 1998-06-18 | Dbt Gmbh | Link chain for chain conveyors - consists of vertical and horizontal chain links with respective oval internal openings and being interlinked in articulated manner |
| DE19806719A1 (en) * | 1997-03-20 | 1998-10-01 | Dbt Gmbh | Drive chain, in particular for use in mining machines |
| CN101223092A (en) * | 2006-03-24 | 2008-07-16 | Dbt有限公司 | Joint chain and sprocket wheel used for chain conveyer |
| US20130333348A1 (en) * | 2011-03-07 | 2013-12-19 | Pewag Austria Gmbh | Chain consisting of oval profile chain links, and method for producing a chain of this type |
| CN103534512A (en) * | 2011-05-17 | 2014-01-22 | 蒂勒有限及两合公司 | Round steel chain |
-
2021
- 2021-11-04 CN CN202111297038.6A patent/CN114084588A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19701579A1 (en) * | 1996-12-13 | 1998-06-18 | Dbt Gmbh | Link chain for chain conveyors - consists of vertical and horizontal chain links with respective oval internal openings and being interlinked in articulated manner |
| DE19806719A1 (en) * | 1997-03-20 | 1998-10-01 | Dbt Gmbh | Drive chain, in particular for use in mining machines |
| CN101223092A (en) * | 2006-03-24 | 2008-07-16 | Dbt有限公司 | Joint chain and sprocket wheel used for chain conveyer |
| US20130333348A1 (en) * | 2011-03-07 | 2013-12-19 | Pewag Austria Gmbh | Chain consisting of oval profile chain links, and method for producing a chain of this type |
| CN103534512A (en) * | 2011-05-17 | 2014-01-22 | 蒂勒有限及两合公司 | Round steel chain |
| US20140090351A1 (en) * | 2011-05-17 | 2014-04-03 | Thiele Gmbh & Co. Kg | Round steel chain |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231200A (en) * | 2022-07-19 | 2022-10-25 | 中煤张家口煤矿机械有限责任公司 | High-strength forged flat ring compact chain for conveying equipment |
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